accidentally hit something on the treadmill at my gym and it opened a web browser??
So basically anything with a screen these days is a computer. Your TV? Computer. Phone? Computer. Gas pump? Computer. And a lot of those computers are running a fork of Windows, because Microsoft is very good at building for corporate use. But it's a fork with most of the same features, because MS has no reason to rebuild their entire OS just for your SmartFridge. Instead, it just boots up a barebones Windows fork, and then auto-launches whatever program McDonalds uses for their drive-through menu or whatever. Which means with the right inputs, you can close that program. And open whatever MS has installed by default, like Solitaire, Word, or Edge.
This is generally not relevant to the user, but if you want to do something on a device that it doesn't allow you to do, getting out of the initial program it forces you into is usually step 1.